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Verbal Assault Specialist
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1,319 Posts
Discussion Starter #1
Whats up fellas,

My buddy has a 96 Suburban and less then a week ago he started to hear a humming sound coming from the rear suspension when accelerating. Thought the rear differential might be low on oil because it had a slow leak. So we changed the rear seal, oil was dirty but no sludge, and refilled it. Took it on a test drive and it is still humming during acceleration. I am not sure exactly where it is coming from, but could it be the ujoint?

Thanks in advance for any input,
Vince
 

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129 Posts
wheel bearings..
U-Joint..
but more then anything ( Carrier bearings..)

Make sure you use Hypoid Gear Oil & addative..

You can use the addative fisrt to see if it helps some then he would know for sure.
 

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Verbal Assault Specialist
Joined
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1,319 Posts
Discussion Starter #3
wheel bearings..
U-Joint..
but more then anything ( Carrier bearings..)

Make sure you use Hypoid Gear Oil & addative..

You can use the addative fisrt to see if it helps some then he would know for sure.
Thanks for the response. This guy told me to check the carrier bearings to put the truck up on jacks, put the trk in to neutral, and wiggle it up and down. If there is play then it is bad.

Haven't tried it yet because we were out of town.
 

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00Silverado
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2,104 Posts
Be carefull not to mistake "play" for the rubber holding it in place. Check U joints. Usually a bad carrier bearing will cause a vibration also, so get it up to speed and feel for one.
 

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Verbal Assault Specialist
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1,319 Posts
Discussion Starter #5
Be carefull not to mistake "play" for the rubber holding it in place. Check U joints. Usually a bad carrier bearing will cause a vibration also, so get it up to speed and feel for one.
Thanks for the tip
 
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